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MAINTENANCE
ERROR MESSAGE
AND DESCRIPTION
POSSIBLE SOLUTION
Trunk Call Dropped: A call that
Normally, no action required;
had been up on a trunk for more
however, if problem persists,
than 9 hours has been detected
perform trunk test call per Trunk
by an audit and dropped. The
Troubles procedure in this Part.
port associated with the error Also, check the CO disconnect
identifies the trunk in question. and trunk timing.
Trunk Call Too Long: An audit
This error is removed when a
found a call that had been up on a
“Trunk Call Dropped” error is
trunk for more than 5 hours and
logged.
Normally,
no action is
logged this error to alert the user
required, and system will recover
of it.
in 4 hours. However, if a problem
does exist, check the associated
trunks per Figure 4-3. Also check
for a trunk to trunk call.
Unable To
Send
Down-link If problem persists, check or
Message:
Down-link message
replace CPU/Memory CP.
queue
is full.
This condition
means that messages to CPs may
be lost.
Unexpected
Command:
Recoverable; no action required.
(STARLAN Interface CP) This
error is an
isolated transient
condition.
Unexpected interrupt: (STARLAN
Normally, no action required;
Interface CP) This error is an
however, if this error occurs too
isolated transient condition.
frequently, a permanent alarm will
be generated and the CP should
be checked.
4-45